Try an RSOD fix, I'm not too sure though but i think it should/may fix the problem, um how did this happen if i may ask ? did you install something from YouTube ? Is it a firmware problem, like a firmware flash gone bad ??

Check this thread. This info might help you with the RSOD issue, but make sure you research and read all the info you can about it first. The "safe" way requires a device (a dongle, a TI-84 calculator, a PSP or an iphone) to toggle Factory Service Mode. Hope you get it going again.